Product Parameters
Item |
Information |
Chemical Name |
1,5-Diphenylcarbazide |
CAS Number |
140-22-7 |
Molecular Formula |
C18H14N2 |
Molecular Weight |
262.32 g/mol |
Purity |
≥99% (for analysis) |
Appearance |
White to off-white crystalline powder |
Melting Point |
218-222 °C |
Boiling Point |
Decomposes before boiling |
Density |
1.16 g/cm³ (approximate) |
Solubility |
Soluble in ethanol, methanol, and other organic solvents; slightly soluble in water |
Usage |
Analytical reagent, used in the determination of heavy metals and other analytical procedures |
Storage Conditions |
Store in a cool, dry place, protected from light and moisture |
Packaging |
Typically available in glass bottles or vials |
Hazard Classifications |
Irritant (skin, eyes), Harmful if swallowed |
Safety Precautions |
Wear appropriate personal protective equipment (PPE) such as gloves, goggles, and lab coat. Handle in a well-ventilated area. |
1. Analytical Applications
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Heavy Metal Detection: 1,5-Diphenylcarbazide is widely used as a colorimetric reagent for the detection and determination of heavy metals, particularly chromium (Cr). It forms a colored complex with hexavalent chromium (Cr(VI)), which can be quantified using spectrophotometric methods. This application is crucial in environmental analysis, where the presence of heavy metals in water, soil, and air samples needs to be monitored.
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Qualitative and Quantitative Analysis: It is employed in qualitative tests to identify the presence of specific metal ions and in quantitative analysis to determine their concentrations. The reagent's ability to form distinct-colored complexes allows for precise measurements, making it a valuable tool in analytical chemistry.
2. Laboratory Research
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Research in Analytical Chemistry: In research laboratories, 1,5-Diphenylcarbazide is used to develop and validate new analytical methods for detecting and quantifying trace metals. Researchers can explore its reactivity with different metal ions and optimize conditions for accurate and reliable measurements.
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Environmental Studies: It is used in studies related to environmental pollution and remediation. By analyzing samples from various environmental sources, researchers can assess the levels of heavy metals and evaluate the effectiveness of pollution control measures.
3. Industrial Applications
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Quality Control in Water Treatment: In the water treatment industry, 1,5-Diphenylcarbazide is used to monitor the presence of heavy metals in water supplies. It helps ensure that water meets regulatory standards for safety and quality.
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Pharmaceutical and Chemical Industries: It is used in the analysis of raw materials, intermediates, and final products to ensure they are free from heavy metal contamination. This is particularly important in the pharmaceutical industry, where the purity of products is critical.
4. Safety Considerations
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Handling and Storage: 1,5-Diphenylcarbazide should be handled with care due to its potential irritant properties. It is recommended to wear appropriate personal protective equipment (PPE), such as gloves, goggles, and lab coats, when handling this reagent. Store it in a cool, dry place, protected from light and moisture to maintain its stability and purity.
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Disposal: Dispose of 1,5-Diphenylcarbazide and its waste products according to local regulations. Avoid releasing it into the environment, and ensure that waste is properly treated or disposed of in designated facilities.
Summary
1,5-Diphenylcarbazide, for analysis, is a versatile reagent used primarily for the detection and quantification of heavy metals, especially chromium. Its applications span across various fields, including environmental monitoring, industrial quality control, and research in analytical chemistry. Due to its reactivity and sensitivity, it is an essential tool for ensuring the safety and quality of water, soil, and other materials. However, proper handling and storage are necessary to ensure safety and maintain the integrity of the reagent.
Describe
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Chongqing Yuhan Technology Co., Ltd. -- Bridging High-Quality Chemicals to Global Markets
About Us
Since 2017, Chongqing Yuhan Technology has grown from a local supplier to a leading international trader of chemical raw materials and reagents. We serve diverse industries including electric power, metallurgy, agriculture, pharmaceuticals, textiles, plastics, and research institutions, with a global client base.
Our Business Scope
We offer a wide range of chemical products, specializing in high-purity acids, perovskite materials, and hazardous chemicals. Our focus on bulk and high-performance materials ensures we meet the unique needs of our clients with customized solutions.
Our Strengths
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Diverse Product Lines: Comprehensive range of chemicals for one-stop procurement.
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Market Competitiveness: Strong market position with long-term partnerships.
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Looking Forward
We are committed to continuous improvement, offering more professional and efficient solutions. We aim to expand our international presence and become the preferred partner for high-quality chemical raw materials and reagents globally.
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Industry Reputation: Recognized for professionalism and reliability.
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Risk Control: Effective management of safety and environmental risks.
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Partner Trust: Trusted for securing favorable terms and prices.








Q1: Can I get some samples?
A: Yes, sure. Usually, we can provide free samples for less than 5 kg, but the customer needs to pay for the shipping.
Q2: What is your MOQ?
A: The minimum order quantity varies for different products, with most requiring a minimum of 1 ton. However, we can accommodate smaller quantities, such as 100kg, with a 100% sample charge.
Q3: How to confirm product quality before placing an order?
A: You can obtain free samples of the products, but you need to cover the shipping fee or arrange for the samples to be sent to us by express. Additionally, you can provide us with your product specifications and requirements, and we will manufacture the products accordingly.
Q4: Is there a discount for bulk purchases? How much is the discount?
A: Yes, we offer discounts for bulk purchases. The discount is determined by evaluating factors such as purchase volume, product type, and cooperation period. Generally, the larger the purchase volume, the greater the discount.
Q5: How do I start paying?
A: Payment can be made by wire transfer, Western Union, PayPal, Visa, Mastercard, T/T, Apple Pay, Google Pay, etc.
Q6: What is the shipping time?
A: We ship the products out within 1-3 days and provide a tracking number. Shipping time varies by country.
Q7: What qualifications and certifications does the company have? Such as ISO certification, etc.
A: Our supply manufacturers hold several authoritative certifications to ensure our products and services meet international standards and industry regulations. This includes the ISO 9001 Quality Management System certification, which indicates we have reached internationally recognized levels in product quality control, production process management, and continuous improvement, providing stable and reliable quality assurance for customers.
Q8: How about the after-sale service of products?
A: After purchasing products from our company, you will be supported by our professional technical team and after-sales team, who will help solve any problems you may encounter.